Table 1 Concentration of marker inhibitors and metals detected in OMSW fibre hydrolysate and the respective minimum inhibitory concentrations (MIC) for Escherichia coli

Acids

Levulinic

29.64

± 0.37

345^a

Acetic

5.77

± 0.09

416^a

Propionic

0.24

± 0.08

570^b

Butyric

0.11

± 0.0027

460^b

Hexanoic

0.11

± 0.02

12^c

Aldehydes

Vanillin

2.10

± 0.10

10^d

5-HMF

n/d

32^d

Furfural

n/d

36^d

Metals

Calcium

119.20

± 0.000032

n/a

Sodium

15.26

± 0.00014

n/a

Potassium

7.67

± 0.000030

n/a

Magnesium

3.65

± 0.00099

n/a

Iron

0.70

± 0.000028

1^e

Aluminium

0.58

± 0.00014

2^f

Zinc

0.12

± 0.000020

n/a

Manganese

0.050

± 0.000056

1^f

Nickel

0.0061

± 0.000090

20^f

Chromium

0.0011

± 0.00013

1^f

Copper

0.00082

± 0.00031

1^f

Antimony

0.00078

± 0.000053

5^f

Vanadium

0.00072

± 0.00015

1^f

Cobalt

0.00055

± 0.00019

1^g

Molybdenum

0.00019

± 0.00035

n/a

Lead

0.000049

± 0.000031

5^f